This is the amplifier that boosts a cell phone's reception 20X while driving. Unlike other models that that only boost 2G or 3G signals, this one is optimized to amplify 4G LTE signals for Verizon or AT&T cell phones (also boosts 3G and 2G signals for nearly all U.S. carriers). It improves bi-directional signal strength in weak-signal areas, minimizing dropped calls and maximizing data speeds. The amplifier plugs into a car's DC power source and connects to an external antenna that magnetically attaches to your car's exterior. Placing a cell phone in the booster's cradle increases the gain up to 26 dB, but requires no physical connection because it relays calls wirelessly, allowing use of a Bluetooth headset, wired headset, or speakerphone. Specify Verizon or AT&T service. Amplifier: 4 1/4" H x 2 1/2" W x 2 1/4" D. (2 1/2 oz.)

The Driver's Cell Phone Signal Booster comes with The Hammacher Schlemmer Lifetime Guarantee at no additional charge. If this product ever disappoints you, for any reason, you may return your Hammacher Schlemmer purchase for exchange, credit, or refund.

Should you have any questions, we are available 24 hours a day, seven days a week. Please call 1-800-321-1484 to speak with a product specialist or email us at customerservice@hammacher.com to receive a response within one hour.